Yeah, there is a scary trend here. Intel gained very little in the high end this past node shrink. 22nm ivy at over 4ghz used as much or more power than 32nm sandy. There has been a real issue here that most people havent caught on to. This picture is worth 1000 words.
The only improvements to TDP has been in lower frequencies. If Haswell hadnt improved ipc, we would have gained absolutely nothing these past 2 generations. The ipc gains were rather small but they were at least something.
But the problem is really disturbing, the 4790k came out on a very very mature 22nm silicon. Intel claims only a tiny 4 watt increase for the 4790k but in the real world it is much more.
I am not trying to make the point that there was no improvement going from 32nm to 22nm, i dont want people to get carried away with that. Lets just say there was very very little improvement when it comes to the higher speeds and power consumption.
My fear is that broadwell has ran into the same troubles. I think it is with Intel's 14nm node. This is a scary thing to think about. It really is gonna take a radical new architecture to move us forward. Skylake might be this awesome tech, but if they have to run it at 3ghz........
its gonna really hurt. Loosing clock speed will be a negative that takes away from how great the architecture could be.
We have hit a major cliff and intel was the first to come on it. Now we see TSMC finding 20nm HP to be pretty much worthless. Everyone is now thinking it is just 20nm. People are thinking all will be fine when tsmc goes to 16nm but i am not so sure now.
When i see something funny going on with intel and their smaller nodes, then TSMC and their 20nm HP. I really dont like the way things are looking right now